← Mixed mental challenge lesson New set →

Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 755 · 40 questions
TalentJR

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

NameDateTime takenScore ___ / 40
  1. 1.75 + 14 =
  2. 2.Half of 154 =
  3. 3.39 laddoos are packed in boxes of 5. How many laddoos are left over?
  4. 4.Best estimate of 360 + 539? (a) 700 (b) 1100 (c) 900
  5. 5.46 + 6 =
  6. 6.A film starts at 3:00 and ends at 4:40. How many minutes long is the film?
  7. 7.What is the remainder when 25 is divided by 4?
  8. 8.2 + ? = 10
  9. 9.78 + 5 =
  10. 10.33 × 4 =
  11. 11.44 + 9 =
  12. 12.24² =
  13. 13.42 + 9 =
  14. 14.318 − 285 =
  15. 15.Double 41 =
  16. 16.Double 48 =
  17. 17.45 + ? = 100
  18. 18.17 + 4 =
  19. 19.You start your homework at 1:55 and finish at 3:20. How many minutes did you work?
  20. 20.58 + 9 =
  21. 21.77 + 86 =
  22. 22.47 + 4 =
  23. 23.What is the remainder when 73 is divided by 6?
  24. 24.495 + 99 =
  25. 25.40 × 4 =
  26. 26.220 ÷ 4 =
  27. 27.152 ÷ 8 =
  28. 28.Double 22 =
  29. 29.78 + 75 =
  30. 30.1008 − 977 =
  31. 31.25 × 4 =
  32. 32.5 + ? = 10
  33. 33.217 − 181 =
  34. 34.160 ÷ 4 =
  35. 35.37 + 9 =
  36. 36.73 − 38 =
  37. 37.286 + 99 =
  38. 38.A film starts at 2:10 and ends at 5:05. How many minutes long is the film?
  39. 39.77 − 12 =
  40. 40.Best estimate of 71 × 83? (a) 56000 (b) 560 (c) 5600

Answer key

  1. 89
  2. 77
  3. 4
  4. 900
  5. 52
  6. 100
  7. 1
  8. 8
  9. 83
  10. 132
  11. 53
  12. 576
  13. 51
  14. 33
  15. 82
  16. 96
  17. 55
  18. 21
  19. 85
  20. 67
  21. 163
  22. 51
  23. 1
  24. 594
  25. 160
  26. 55
  27. 19
  28. 44
  29. 153
  30. 31
  31. 100
  32. 5
  33. 36
  34. 40
  35. 46
  36. 35
  37. 385
  38. 175
  39. 65
  40. 5600

Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths